Home / 1,470.40-2,028.08-1,249

Finding the Fourth Proportional to 1,470.40, 2,028.08 and 1,249

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Solution

The fourth proportional to 1,470.40, 2,028.08 and 1,249 is: 1,722.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,470.40 : 2,028.08 = 1,249 : x
  2. Step 2: Convert to fraction form
    1,470.40/2,028.08 = 1,249/x
  3. Step 3: Cross multiply
    1,470.40x = 2,028.08 × 1,249
  4. Step 4: Simplify right side
    1,470.40x = 2,533,071.92
  5. Step 5: Solve for x
    x = 2,533,071.92/1,470.40
  6. Step 6: Final answer
    x = 1,722.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.